de.swm.commons.mobile.client.widgets

Class PaintableCanvas

java.lang.Object

com.google.gwt.user.client.ui.UIObject

com.google.gwt.user.client.ui.Widget

de.swm.commons.mobile.client.widgets.PaintableCanvas

All Implemented Interfaces:

com.google.gwt.event.logical.shared.HasAttachHandlers, com.google.gwt.event.shared.EventHandler, com.google.gwt.event.shared.HasHandlers, com.google.gwt.user.client.EventListener, com.google.gwt.user.client.ui.HasVisibility, com.google.gwt.user.client.ui.IsWidget, DragEventsHandler

public class PaintableCanvas
extends com.google.gwt.user.client.ui.Widget
implements DragEventsHandler

Canvas element which is able to be painted with different colors and line widths.

Author:

karsunke.franziskus
copyright (C) 2011, SWM Services GmbH

Nested Class Summary

Nested classes/interfaces inherited from class com.google.gwt.user.client.ui.UIObject

com.google.gwt.user.client.ui.UIObject.DebugIdImpl, com.google.gwt.user.client.ui.UIObject.DebugIdImplEnabled

Field Summary

Fields

Modifier and Type	Field and Description
static String	STANDARD_COLOR
static int	STANDARD_LINE_WIDTH

Fields inherited from class com.google.gwt.user.client.ui.UIObject

DEBUG_ID_PREFIX

Constructor Summary

Constructors

Constructor and Description
PaintableCanvas(int height, int width)

Method Summary

Methods

Modifier and Type	Method and Description
void	drawImage(com.google.gwt.user.client.ui.Image image, double offsetX, double offsetY, double scaleX, double scaleY)
void	drawImage(com.google.gwt.resources.client.ImageResource resource, double offsetX, double offsetY, double scaleX, double scaleY)
void	drawImage(com.google.gwt.resources.client.ImageResource resource, int offsetX, int offsetY)
void	drawImageStretched(com.google.gwt.user.client.ui.Image image)
void	drawImageStretched(com.google.gwt.resources.client.ImageResource resource)
String	getColor()
String	getImageAsBase64PNG()
int	getLineWidth()
void	onDragEnd(DragEvent dragEvent) When the drag ends
void	onDragMove(DragEvent dragEvent) When the drag is ongoing.
void	onDragStart(DragEvent dragEvent) When the drag starts.
void	paintLine(int fromX, int fromY, int toX, int toY)
void	setColor(String color)
void	setHeight(int height)
void	setImage(com.google.gwt.resources.client.ImageResource resource)
void	setLineWidth(int lineWidth)
void	setWidth(int width)

Methods inherited from class com.google.gwt.user.client.ui.Widget

addAttachHandler, addBitlessDomHandler, addDomHandler, addHandler, asWidget, asWidgetOrNull, createHandlerManager, delegateEvent, doAttachChildren, doDetachChildren, fireEvent, getHandlerCount, getLayoutData, getParent, isAttached, isOrWasAttached, onAttach, onBrowserEvent, onDetach, onLoad, onUnload, removeFromParent, setLayoutData, sinkEvents, unsinkEvents

Methods inherited from class com.google.gwt.user.client.ui.UIObject

addStyleDependentName, addStyleName, ensureDebugId, ensureDebugId, ensureDebugId, getAbsoluteLeft, getAbsoluteTop, getElement, getOffsetHeight, getOffsetWidth, getStyleElement, getStyleName, getStyleName, getStylePrimaryName, getStylePrimaryName, getTitle, isVisible, isVisible, onEnsureDebugId, removeStyleDependentName, removeStyleName, resolvePotentialElement, setElement, setElement, setHeight, setPixelSize, setSize, setStyleDependentName, setStyleName, setStyleName, setStyleName, setStyleName, setStylePrimaryName, setStylePrimaryName, setTitle, setVisible, setVisible, setWidth, sinkBitlessEvent, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface de.swm.commons.mobile.client.event.DragEventsHandler

getElement

Field Detail

STANDARD_COLOR

public static final String STANDARD_COLOR

See Also:

Constant Field Values

STANDARD_LINE_WIDTH

public static final int STANDARD_LINE_WIDTH

See Also:

Constant Field Values

Constructor Detail

PaintableCanvas

public PaintableCanvas(int height,
               int width)

Method Detail

paintLine

public void paintLine(int fromX,
             int fromY,
             int toX,
             int toY)

setHeight

public void setHeight(int height)

setWidth

public void setWidth(int width)

getColor

public String getColor()

setColor

public void setColor(String color)

getLineWidth

public int getLineWidth()

setLineWidth

public void setLineWidth(int lineWidth)

onDragStart

public void onDragStart(DragEvent dragEvent)

Description copied from interface: DragEventsHandler

When the drag starts.

Specified by:

onDragStart in interface DragEventsHandler

Parameters:

dragEvent - drag event

onDragMove

public void onDragMove(DragEvent dragEvent)

Description copied from interface: DragEventsHandler

When the drag is ongoing.

Specified by:

onDragMove in interface DragEventsHandler

Parameters:

dragEvent - drag event

onDragEnd

public void onDragEnd(DragEvent dragEvent)

Description copied from interface: DragEventsHandler

When the drag ends

Specified by:

onDragEnd in interface DragEventsHandler

Parameters:

dragEvent - drag event

getImageAsBase64PNG

public String getImageAsBase64PNG()

setImage

public void setImage(com.google.gwt.resources.client.ImageResource resource)

drawImage

public void drawImage(com.google.gwt.resources.client.ImageResource resource,
             int offsetX,
             int offsetY)

drawImage

public void drawImage(com.google.gwt.resources.client.ImageResource resource,
             double offsetX,
             double offsetY,
             double scaleX,
             double scaleY)

drawImageStretched

public void drawImageStretched(com.google.gwt.resources.client.ImageResource resource)

drawImageStretched

public void drawImageStretched(com.google.gwt.user.client.ui.Image image)

drawImage

public void drawImage(com.google.gwt.user.client.ui.Image image,
             double offsetX,
             double offsetY,
             double scaleX,
             double scaleY)